Resilient tire.



1.V.DEWALU. A -RESILIENT TIRE. APPUCATION FILED SEP'T.12,\916.

Patented Jun@ 5, 1917n JoHNV.DEwALD.

` E rand -Stateof Pennsylvanie,

'resilient tire `or vehicle *estimated ein@ will und other portion JOHN v. DEWALD,

or PEILADELPHIA, PENNSYLVANIA.

nnsILIEN'r TIRE.

f 1 ,ecossey Specification df LettersvPatent.

Patented June 5, 1.917.

Application led September 12, 1916. `Sera1No- 119,635.

To aZZ fw/wmmay concern: y Be it known vthatfI.; 4lo-Hiv V. DEWALD, e citizen of thev United States7 residing at Philadelphia, in the county'T of Philadelphia have invented certain 'nen'7 and useful Improvements in Resilient Tires, of which the following is a specification. i I

`My .invention consists of en improved of my invention being to make e durable resilient tire which muy beu inflatedwith air and which will .include e removable trend. Another object of my invention is to so -designmy improved'tire that the tread may be easily removed or replacedv when thetire be'llrmly held in place 'when` the tire is inla-ted.

AAnother objcctvof my invention is to so construct my improved `tire that the remov able treed will be locked against circumfer entil movement when and ready for use.

'llhese objects,fand` other advantageous ,endstvhich"will be described hereinafter, I

atte-in lin `the :following manner, reference b'ein had to the accompanying drawings in W nc www of Fig. 1 showing the position ofthe tire when 'inflated and ready for use.v

Fig. 3 is' u; section vsimilar to that shown in Fig. 2` showing in fullline position the `msnner'oi attaching `o r"deteching the tread #'40:wheny the tire is deflated sind in dotanddash. lines the position assumed by the .tread `is inflated.

Fig. 4 is an enlarged section on the line 45 bei of` rig. 1.

`Referring" tothe drwings, 1 represents the body portion of my improved tire which is hollow als shown fat 2 and designed to receive en inner tube (not shown).

.50 and 4: represent the beads of the tir and may be of any desirable construction and are designed' to beettached to the rim' ofr Aein/heel. "The detachable treed portion 5 i mey be'made of tough rubber which isre inforced as shown at 6 or may be made of any 'other tough flexible materiel.

Wheels, ,one object' at' their extreme inner portions. 'grooves 12 are interrupted by the cavities l() and extend from one cavity to another thetire is inflated grooves 12 1n said body portion.

Figure 1 is a .fragmentary section of my of the tire Whentbe latter 'an-.ongle so es to portion lits, said The body portion 1 has two annulerly' ex so'y is interrupted et predetermined points throughout the circumference of the tire to lforn'i-t-)ransversely extending cavities 10 (see Ps- 1 1 The recesses 7 and 8 each include circumferentially `extending grooves 11 at Ipositions remote from the central flange 9 and circnmferentially extending grooves 12 which form under-cut surfaces forrthecentml flange 9, said grooves 11 and 12 bein formed Vby undercutting the recesses 7 cavity.

' The tread `portion 5 has two inwardly extending flangesv 18 and 14 WhichV are designed to t' Within .the recesses 7and18- of' the body portion 1. Each of the flanges 13 vand 14 has a circumferentially extending i, bead l5 designedto fit said annuler ooves 11 .sind also includes beads 16 which fit the These beads 16. at pre-determined positions regis tering with the cavities 10, are connected by the-materiel forming said tread 17 in Fig. 4, 'said connecting portion having .reinforcing members 18e1nbedded therein and serving to completely lill the' cavities 1G, thus forming an interlock between the tread and the body portion 1 which prevents the tread from creeping ciroumferentielly to the body portion,the reinforcedv portion 18 acting to abut the shoulders 19 which 4are formed by the ends of thecentral' flange 9 (see Figs. 1 and 4).

The outer side Walls 2O of lthelportion 1 which forms thecavities 7 and 8 extend at provide' lip portions 21, and the outer surfaces 22 of, the `flanges v13 and 14 of to iform recesses into which the -lip portions 21 t. A f The flanges 13 and ld'of the tread 2 bein' spaced as illustrated,` providee` groove 2 into which the central flange 9 `of the bod groove 23 being 'inter-f rupted by the portion4 17 which fits within the cavities, 10..

bent, when the tire is not inflated, to facilithe treed also extendy at an angle.

so thetit may be.

tate the insertion of the flanges 13 and 14 Within the recesses 7 and 8 in the body portion 1.

, When the body portion 1 is inflated, the pressure causes the body portion to be moved outwardlyso as to firmly press the engaging portions of the tread and tire together, so that itis impossible for the tread to work loosefrom,4 the body portion when the tire is in servi'c'elq' Furthermore,'-'a t'ire made in accordance with my invention may be replaced with a new tread when the old tread becomes worn,

and thus greatly lengthens the life of the tire which-renders it especially desirable for the owners of vehicles employing tires of this type.

While I have described my invention as taking a particular iorm, it will be understood that the various parts of my invention may be changed without departing from the -spirit thereof, and hence I do not limit my soli tb the precise construction set forth, but consider that l am at liberty to make such changes and alterations fairly come Within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A tire for Vehicle wheels, comprising a body and'a tread section both made of iiexible material, said sections having interlocking flange and grooveJ connection one with f the other, the flange portion being interrupted in its length to for-m cavities, means interposed in said 4Acavities and projecting from `said other section -to form an interlock between the sections' to prevent' relative creeping movens'rltjbct-ween the tread section and body section, and reinforcing material embedded. Within said means', substantiall as described.

2. A tire for vehicle Wheels, comprising a, body section having under-cut annular recesses and a fia'n'ge extending between said recesses, said flange being interrupted ait-predetermined positions throughout its length to form lcavities, said tread section having flanges-fitting said recesses, and portions designed to extend within said cavities to form an interlock between said sections, Said latter portions being reinforced, substantially as described.

3. A tire for vehiclevvheels, comprising a body section and a tread section, said body 'shear of the material positioned within said,

cavities, substantially as described.

section anda tread section, said body I. testimony whereof I have signed ,Irly' i name to this lspecification in the presen e! of two subscribing witnesses. n v

J CHN V. DEVALD." Witnesses: f

RHODA E. GILLins, CHAs.'E. Po'r'rs. 

